chore: export duckdb Singleton (#48)

* chore: export duckdb Singleton

* bump version

* nit fix

Author: Prabhat0602-source

meerkat-node/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@devrev/meerkat-node",
-  "version": "0.0.60",
+  "version": "0.0.61",
   "dependencies": {
     "@swc/helpers": "~0.5.0",
     "@devrev/meerkat-core": "*",

meerkat-node/src/index.ts

@@ -1,2 +1,3 @@
 export * from './cube-to-sql/cube-to-sql';
+export * from './duckdb-singleton';
 export * from './node-sql-to-serialization';